Build failed. https://zuul.opendev.org/t/openstack/buildset/c381ec4f0472425c9e40d23e075e6a67 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d87cb1ef02e54de0859e4e5f75a34fd1 : FAILURE in 3m 34s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d467ff1efc5b47baa2033bc298dd87ce : FAILURE in 3m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/85f53f755b4042df938b27e9083f3a03 : FAILURE in 6m 05s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e8595a7a12864f61807fe86d563838c2 : FAILURE in 4m 19s